Technical Note: Elbow Mounted Annubar Flow Meter: A ...

1 Technical Note 00840-0200-4809, Rev BARosemount Annubar Flow Meter SeriesMay 2018 Rosemount Annubar Flow Meter SeriesElbow Mounted Annubar Flow Meters: A Solution to Short Pipe Piping configurations affect flow measurement Rosemount 485 Elbow -mount Annubar Guidelines for a successful Elbow mount installation Elbow mount Annubar piping configurationFigure 1-1. Velocity Distortion Following a Single ElbowA. Out-of-plane perpendicular to the Elbow planeB. In-Plane parallel to the Elbow today's typical piping configurations, finding the appropriate amount of straight run required to install most flow meters can be difficult. Many flow measurement devices are installed with less than ideal straight run, which has a significant affect on performance. The Rosemount 485 Annubar has been engineered and tested to deliver accurate and repeatable measurements in applications with minimal straight pipe run. This can be done even when an Elbow is in the piping Technical Note00840-0200-4809, Rev BARosemount Annubar Flow Meter SeriesMay 2018 Rosemount Annubar Flow Meter configurations affect flow measurementThe key to the Annubar flow element accuracy is the prediction of the discharge coefficient, or K factor.

3 Technical Note 00840-0200-4809, Rev BA Rosemount Annubar Flow Meter Series May 2018 Rosemount Annubar Flow Meter Series 4.0 Guidelines for a successful elbow mount installation

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